TWI511680B - Buckle - Google Patents

Description

buckle

The present invention relates to a buckle and a socket which are engageable and detachable from each other, and are configured as a buckle that can connect and separate end portions of the belt-shaped member.

In the conventional buckle, it is known that the configuration (for example, refer to Patent Documents 1 and 2) includes a plug and a slot that can be engaged with each other and released, and the plug has a guide rod formed along the plug insertion line. The slot has a guide portion that guides the guide bar along the plug insertion line.

[first technology offer] [Patent Literature]

[Patent Document 1] US Patent No. 6421889

[Patent Document 2] Japanese Patent No. 4174561

However, the buckles described in the above Patent Documents 1 and 2 are composed of The guide rod and the guiding portion are formed along the plug insertion line, so the plug must be inserted straight along the plug insertion line, and if the plug is inserted obliquely into the plug insertion line, the plug cannot be inserted. Slot.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a buckle that can easily insert a plug into a slot even if the plug is inserted obliquely into the plug insertion wire.

The above object of the present invention is achieved by the following constitution.

(1) The buckle is characterized in that it has a plug having a plug into which the plug is inserted and which is engaged with the plug, the plug having: a plug-side base to which the belt-shaped member is to be attached; a pair of leg portions extending in parallel in the width direction at both end portions of the plug-side base portion; and a pair of engaging projection portions respectively formed at the front end portions of the pair of leg portions in the vertical direction, and the leg portion is provided with: An operation portion for operating the leg portion; and a slit insertion portion between the engagement projection portion of the leg portion and the operation portion, the slot having a slot-side base portion to which the belt-shaped member is to be attached; An upper plate and a lower plate extending from the base of the groove side; an upper side wall portion protruding downward along both side edges in the width direction of the upper plate; and a lower side wall portion protruding upward along the both side edges in the width direction of the lower plate And an engaging segment portion respectively engageable with a pair of engaging protrusions inserted between one of the upper and lower plates; and an end opening formed at an insertion side of the plug between the upper side wall portion and the lower side wall portion a slit for inserting a pair of legs; and an inner side surface of the upper side wall portion and the lower side wall portion, The pair of engaging projections inserted into one of the upper and lower plates are guided to the guiding surface of the engaging section, and the vertical dimension of the pair of engaging projections is set to be larger than the width of the slit. , When the plug is inserted into the slot, the slit insertion portion of the leg portion of the plug enters the slit of the slot, so that the engaging projection of the leg portion is guided by the guiding surface of the slot.

(2) The buckle according to the above aspect, wherein the leg portion has an outer leg portion and an inner leg portion, and the inner leg portion is configured to have a dimension in the vertical direction that is larger than a width dimension of the slit.

(3) The buckle according to the item (2), wherein the operation portion is formed from a base end portion to an intermediate portion of the outer leg portion, and the vertical dimension of the operation portion is set to be larger than that between the upper and lower plates. The size in the up and down direction is also large.

(4) The buckle according to any one of the preceding claims, wherein the plug has a fitting disposed between the pair of leg portions and formed to be parallel to the pair of leg portions. The rod and the slot have fitting holes that are disposed between the upper and lower plates and that are fitted to the fitting rod.

(5) The buckle according to the item (3), wherein the outer leg portion is formed with a slit insertion portion into which a slit of the slot can be inserted.

(6) The buckle according to Item (1) or (4), wherein the inner side surface of the lower plate above the slot is formed to be gradually narrowed toward the base side of the slot side.

(7) The buckle is characterized in that it has a plug having a plug and a slot to be engaged with the plug, the plug having: a plug-side base to which the belt-shaped member is to be attached; and a base from the plug side a pair of leg portions extending in parallel at both ends in the width direction; and a pair of engaging projections respectively formed at the front end portions of the pair of leg portions in the vertical direction, and the slot has a belt to be mounted a socket-side base portion of the shape member; an upper plate and a lower plate extending from the socket-side base portion; an upper side wall portion projecting downward along both side edges in the width direction of the upper plate; and both sides along the width direction of the lower plate The edge is formed as a lower side wall protruding upward a locking portion that is engageable with a pair of engaging projections that are inserted between the upper and lower plates, and an end portion that is formed between the upper side wall portion and the lower side wall portion and that has a plug insertion side a slit that can insert a pair of leg portions; and an inner side surface of the upper side wall portion and the lower side wall portion, and can guide a pair of engaging projections inserted between the upper and lower plates to the leg portion to be engaged The guide surface of the segment is configured such that the action of inserting the plug into the slot causes the engagement protrusion of the leg portion of the plug to contact the guide surface of the slot to perform guidance.

(8) The buckle according to the item (7), wherein the leg portion has an outer leg portion and an inner leg portion, and the outer side surface of the inner leg portion is configured to contact the upper side wall portion and the lower side wall portion of the slot. guide.

(9) The buckle according to the above item (7), wherein the leg portion has an outer leg portion and an inner leg portion, and the inner side surface of the outer leg portion is in contact with the upper plate of the slot. And the outer side of the lower plate performs the guiding.

(10) The buckle according to the item (7), wherein the operation of inserting the plug into the slot is continuously performed: guiding by the engaging projection of the leg portion of the plug and the guiding surface of the slot; Guided by the outer side of the inner leg and the side wall portion and the lower side wall portion of the slot; and the inner side of the outer leg portion of the plug and the outer side of the upper plate and the lower plate of the slot.

According to the buckle of the present invention, since the plug has a pair of engaging projections which are formed at the front ends of the pair of leg portions respectively protruding in the up-and-down direction, the slots thereof have: formed along both side edges in the width direction of the upper plate The upper side wall portion protruding downward; the two side edges along the width direction of the lower plate are formed upward a protruding lower side wall portion; formed between the upper side wall portion and the lower side wall portion, the end opening of the plug insertion side being formed as a slit into which the pair of leg portions can be inserted; and the upper side wall portion and the lower side wall portion The inner side surface is formed, and the pair of engaging projections inserted between the upper and lower plates can be guided to the guiding surface of the engaging portion, and the vertical dimension of the pair of engaging projections is set to be higher than The width of the slit is also large, so that even if the plug is inserted obliquely to the plug insertion wire, the pair of engaging projections of one of the leg portions of the plug contact the guiding faces of the upper side wall portion and the lower side wall portion of the socket. Be guided. As a result, the orientation of the plug is adjusted to be inserted along the plug, so that the plug can be easily inserted into the slot.

Further, according to the buckle of the present invention, since the size of the upper and lower sides of the inner leg portion of the leg portion is set to be larger than the width dimension of the slit, even if the plug is inserted obliquely to the plug insertion wire, the plug is inserted. The outer side surface of the inner leg portion of one of the leg portions is guided by the end portion of the upper side wall portion and the lower side wall portion of the slot. As a result, the orientation of the plug is adjusted to be inserted along the plug, so that it is easier to insert the plug into the slot.

Further, according to the buckle of the present invention, since the size of the vertical direction of the operation portion of the outer leg portion is set to be larger than the size of the vertical direction between the upper and lower plates, even if the plug is inserted obliquely into the plug insertion wire, the insertion is performed. The inner side of the outer leg of one of the legs of the plug contacts the outer side of the upper and lower plates of the slot and is guided. As a result, the orientation of the plug is adjusted to be inserted along the plug, so that it is easier to insert the plug into the slot.

Further, when the buckle according to the present invention is used, since the plug has a fitting rod formed between a pair of leg portions and a pair of leg portions, and the slot has a fitting hole disposed between the upper and lower plates and fitted by the fitting rod, so that the buckle can be engaged Prevent the plug and slot from swaying in the up and down direction.

Further, according to the buckle of the present invention, since the inner side surface of the lower plate above the slot is formed to be gradually narrowed toward the base side of the slot side, the end portion of the plug insertion side of the upper and lower plates can be formed to be wider, and Increase the plug's insertion.

10‧‧‧ buckle

20‧‧‧ plug

21‧‧‧ Plug base

22‧‧‧foot

23‧‧‧Clamping protrusion

24‧‧‧Fiing rod

25‧‧‧ outside foot

25a‧‧‧Operation Department

26‧‧‧Inside foot

26a‧‧‧1st bend

26b‧‧‧2nd bend

30‧‧‧Slots

31‧‧‧Slot side base

32‧‧‧Upper board

33‧‧‧ Lower board

34‧‧‧Upper side wall

35‧‧‧lower side wall

36‧‧‧Clock section

37‧‧‧ slitting

38‧‧‧ Guide surface

39‧‧‧ fitting holes

PL‧‧‧ plug insertion line

T1‧‧‧Upper and down direction dimensions of a pair of engaging projections

T2‧‧‧ slit width dimension

T3‧‧‧Upper and down dimension of the first bend of the inner leg

T4‧‧‧Upper and down direction of the operating part of the outer leg

T5‧‧‧Upper and lower dimensions between upper and lower plates

Fig. 1 is a perspective view showing an engagement state of an embodiment of a buckle according to the present invention.

Fig. 2 is a perspective view showing the non-engaged state of the buckle shown in Fig. 1.

Figure 3 is a partial cutaway view of the buckle in a non-engaged state.

Figure 4 is a right side view of the buckle in a non-engaged state.

Fig. 5 is a top view of the plug shown in Fig. 2.

Fig. 6 is a view of the plug shown in Fig. 5 as seen from the pair of leg sides.

Figure 7 is a top view of the slot shown in Figure 2.

Fig. 8 is a view of the slot shown in Fig. 7 as seen from the insertion side of the plug.

Figure 9 is a top view of the buckle in the engaged state.

Fig. 10 is a cross-sectional view taken along line A-A of Fig. 9.

Figure 11 is a cross-sectional view taken along line B-B of Figure 9.

Figure 12 is a cross-sectional view taken along line C-C of Figure 9.

Fig. 13 is a view showing a state in which a pair of engaging projections of the left leg portion of the plug contacts the guide faces of the upper side wall portion and the lower side wall portion of the slot.

Fig. 14 is a view showing a state in which the outer side surface of the inner leg portion of the right leg portion of the plug contacts the end portion of the upper side wall portion and the lower side wall portion of the slot.

Fig. 15 is a view showing the state in which the inner side of the outer leg of the left leg of the plug contacts the outer side of the upper plate and the lower plate of the slot.

[Embodiment of the Invention]

Hereinafter, an embodiment of the buckle according to the present invention will be described in detail based on the drawings. In the following description, the buckle refers to the upper side of the paper surface of Fig. 3, the lower side refers to the lower side of the paper surface of Fig. 3, and the right side refers to the right side of the paper surface of Fig. 3, The so-called left side refers to the left side of the paper of Figure 3. In addition, the left and right direction of the buckle may also be referred to as the width direction.

As shown in FIGS. 1 to 4, the buckle 10 of the present embodiment includes a plug 20 and a slot 30 into which the plug 20 is inserted and engaged with the plug 20. Next, the plug 20 and the slot 30 are formed by extrusion molding of a synthetic resin. Further, the plug 20 and the slot 30 are not limited to synthetic resin, and may be made of metal. In addition, the symbol PL in the figure refers to a plug insertion line when the plug 20 is to be inserted along the center line in the width direction of the slot 30.

As shown in FIGS. 4 to 6, the plug 20 has a plug-side base portion 21 to which a belt-shaped member is to be attached, and a left-right one extending from both end portions in the width direction of the plug-side base portion 21 to be parallel to each other. a pair of engaging projections 23 formed at the front end portions of the pair of right and left leg portions 22 in the vertical direction, and a center portion in the width direction disposed between the pair of right and left leg portions 22, respectively A pair of leg portions 22 are parallel to the fitting rod 24.

The plug-side base portion 21 includes a pair of right and left side panels 21a, and first to third connecting rods 21b to 21d that connect the pair of right and left side panels 21a in the width direction. Next, the pair of right and left leg portions 22 and the fitting rod 24 are formed on the first connecting rod 21b disposed closest to the slot 30 side.

In addition, as shown in FIG. 5 and FIG. 6, a convex portion 21e that protrudes toward the slot 30 side and has a trapezoidal shape on the upper surface is formed at a central portion in the width direction of the first connecting rod 21b. In addition, the first connecting rod 21b is formed with a protruding portion 21f that protrudes toward the slot 30 side over substantially the entire length in the width direction. Next, when the buckle is engaged, the protruding portion 21f is fitted to the inner surface of the end portion on the plug insertion side of the upper and lower plates 32 and 33 of the slot 30 to be described later (see FIGS. 10 to 12). Thereby, it is possible to prevent the plug 20 and the slot 30 from shaking in the up and down direction.

The leg portion 22 is formed to be elastically deformable in the width direction. As shown in Fig. 5, the leg portion 22 has the outer leg portion 25 and is disposed closer to the inner side in the width direction than the outer leg portion 25, and the distal end portion is coupled to the outer leg portion 25 The inner leg 26 of the front end. Further, the thickness of the inner leg portion 26 in the width direction is set to be smaller than the thickness of the outer leg portion 25 in the width direction. In addition, between the outer leg portion 25 and the inner leg portion 26, a The hole in the leg portion 22 is penetrated in the vertical direction.

The outer leg portion 25 has a shape that is gradually curved from the proximal end portion toward the distal end portion in the width direction. Further, an operation portion 25a having a width that is wide in the vertical direction and a substantially rectangular shape on the side surface is formed at the base end portion to the intermediate portion of the outer leg portion 25. Further, a pair of engagement projections 23 are formed on the upper and lower surfaces of the front end portions of the outer leg portions 25, respectively. Further, a portion between the operation portion 25a of the outer leg portion 25 and the pair of engagement projections 23 is a slit insertion portion 25b that is configured to be inserted into the slit 37 of the slot 30 to be described later.

The inner leg portion 26 has a first curved portion 26a that is gradually curved from the proximal end portion toward the intermediate portion toward the inner side in the width direction, and has a shape that is gradually curved outward from the intermediate portion toward the distal end portion in the width direction. The second curved portion 26b is configured such that the inner leg portion 26 is formed in a substantially S-shape when viewed from above.

As shown in FIGS. 5 and 6 , the fitting rod 24 is a plate-like body having a rectangular cross section, and is formed linearly from the center portion in the width direction of the plug-side base portion 21 . Further, a projecting piece 24a extending outward in the width direction is formed in an intermediate portion in the lower direction on both side surfaces of the fitting rod 24. Further, the protruding piece 24a is formed from the plug-side base portion 21 to the intermediate portion in the longitudinal direction of the fitting rod 24. Further, chamfering is applied to the upper and lower surfaces and the left and right surfaces of the front end portion of the fitting rod 24 so that the upper and lower surfaces and the left and right surfaces are formed to be finer toward the front end.

The slot 30, as shown in FIG. 4, FIG. 7, and FIG. 8, has a slot-side base portion 31 to which a belt-shaped member is to be mounted; The upper plate 32 and the lower plate 33 extending from the groove side base portion 31; the upper side wall portions 34 projecting downward along the both side edges in the width direction of the upper plate 32; the both side edges along the width direction of the lower plate 33 are formed upward a protruding lower side wall portion 35; an engaging portion portion 36 that is engageable with each of the pair of engaging projection portions 23 of the pair of left and right leg portions 22 inserted between the upper and lower plates 32, 33; formed on the upper side wall portion 34 and Between the lower side wall portions 35, the end opening of the plug insertion side is formed as a slit 37 into which the pair of right and left leg portions 22 can be inserted, and is formed by the inner side surfaces of the upper side wall portion 34 and the lower side wall portion 35, and can be inserted in A pair of engaging projections 23 of the pair of left and right leg portions 22 between the upper and lower plates 32 and 33 are guided to the guiding surface 38 of the engaging segment portion 36; and are disposed between the upper and lower plates 32 and 33 and are embedded in the plug 20 A fitting hole 39 to be fitted to the rod 24 is fitted.

The slot side base portion 31 includes a pair of left and right side panels 31a and a connecting rod 31b that connects the pair of right and left side panels 31a in the width direction. Next, the upper plate 32 and the lower plate 33 are connected to the pair of left and right side panels 31a.

As shown in Fig. 7, the both side edges of the upper and lower plates 32 and 33 in the width direction are formed in a curved shape which is recessed toward the inner side in the width direction. Further, as shown in Fig. 9, when the buckle is engaged, the operation portion 25a of the outer leg portion 25 of the plug 20 is disposed outward in the width direction from the side edges in the width direction of the upper and lower plates 32, 33.

Further, as shown in FIG. 7 and FIG. 8, the central portion of the end surface in the width direction of the plug insertion side of the upper and lower plates 32 and 33 is formed with a concave portion 32a which is recessed from the upper side toward the side of the socket side base portion 31, and 33a. Then, when the buckle is engaged, the recesses 32a and 33a are fitted into the recesses 32a and 33a. The convex portion 21e of the first connecting rod 21b of the plug side base portion 21 (see Figs. 9 and 10). Thereby, it is possible to prevent the sway of the plug 20 and the slot 30 in the width direction.

As shown in Fig. 4, the upper side wall portion 34 and the lower side wall portion 35 are formed over substantially the entire length of the side edges in the width direction of the upper plate 32 and the lower plate 33, respectively. Further, at the end portions of the upper side wall portion 34 and the lower side wall portion 35 on the plug insertion side, inclined portions 34a and 35a for guiding the pair of right and left leg portions 22 of the plug 20 to the slit 37 are formed.

As shown in FIG. 3, FIG. 7, and FIG. 12, the engaging section 36 is an end portion formed on the side of the slot side base portion 31 on the inner side surface of the upper side wall portion 34 and the lower side wall portion 35, respectively. Further, the engaging portion portion 36 on the side of the upper side wall portion 34 is covered by a protruding piece 32b extending from the upper plate 32 (see FIGS. 1 and 9).

As shown in FIGS. 3 and 7, the guide surface 38 is connected to the upper and lower engaging section portions 36 from the end portions of the inner side surfaces of the upper side wall portion 34 and the lower side wall portion 35 on the plug insertion side. Further, the guide surface 38 has a linear portion 38a formed from the end portion on the insertion side of the plug to the intermediate portion, and a width direction of the guide portion 38 formed from the intermediate portion to the engagement portion 36. The indented portion 38b whose size is gradually narrowed toward the engaging section portion 36. In addition, the engaging portion portion 36 only needs to be formed at a position where the guide surface 38 of the upper side wall portion 34 and the lower side wall portion 35 of the slot 30 is continuous, or only needs to be formed on the upper side wall portion 34 and the lower side wall. The inward portion 38b of the guide surface 38 of the portion 35 may be continuous.

Next, as shown in FIG. 4, the foot portion 22 of the plug 20 is The dimension T1 of the pair of engaging projections 23 in the vertical direction is set to be larger than the width dimension T2 of the slit 37 of the slot 30. As a result, the pair of engaging projections 23 of the left and right leg portions 22 respectively contact the left and right upper side wall portions 34 of the slot 30 and the guide surfaces 38 of the left and right lower side wall portions 35 and are guided. Then, the pair of engagement projections 23 of the left and right leg portions 22 that are guided are engaged with the right and left engagement segment portions 36 after being guided.

Further, as shown in Fig. 13, even if the plug 20 is inserted obliquely from the right side, for example, the pair of engaging projections 23 of the left leg portion 22 of the plug 20 contact the slot 30. The guide faces 38 of the left upper side wall portion 34 and the left lower side wall portion 35 are guided, so that the orientation of the plug 20 is adjusted along the plug insertion line PL.

Further, as shown in Fig. 12, the upper and lower dimension T3 of the first curved portion 26a of the inner leg portion 26 of the plug 20 is set to be larger than the width dimension T2 of the slit 37 of the slot 30. As a result, as shown in Fig. 14, even if the plug 20 is inserted obliquely from the right side, for example, the outer side of the first bent portion 26a of the inner side leg portion 26 of the right side contacts the slot 30. The ends of the side wall portion 34 and the lower side wall portion 35 are guided, so that the orientation of the plug 20 is adjusted again along the plug insertion line PL.

Further, as shown in Fig. 4, the upper and lower dimension T4 of the operation portion 25a of the outer leg portion 25 of the plug 20 is set to be larger than the upper and lower dimension T5 between the upper and lower plates 32 and 33. In this way, as shown in Fig. 15, even if the plug 20 is inserted into the plug insertion line PL, for example, from the right side However, the inner side surface of the operation portion 25a of the left outer leg portion 25 contacts the outer side surfaces of the upper plate 32 and the lower plate 33 of the slot 30 and is guided, so that the orientation of the plug 20 is adjusted to be inserted along the insertion side. Plug the plug line PL.

Next, in the present embodiment, the engagement of the engaging projection 23 and the guide surface 38 of the leg portion 22 and the first bending portion 26a of the inner leg portion 26 and the upper and lower side wall portions 34, 35 are caused. The guidance and the guidance by the operation portion 25a of the outer leg portion 25 and the upper and lower plates 32, 33 are continuously performed by a continuous insertion operation.

Further, as shown in FIGS. 10 to 12, the inner side faces of the lower plates 32, 33 above the slot 30 are formed to be gradually narrowed toward the slot side base portion 31. As a result, the end portions of the upper and lower plates 32 and 33 on the insertion side of the plug are widened, so that the insertability of the plug 20 can be improved.

As shown in FIGS. 8 to 11 , the fitting hole 39 is a rectangular cross-sectional hole formed by inserting the fitting rod 24 with a slight gap therebetween, and is formed by the upper and lower plates 32 and 33 and the upper and lower plates 32. A pair of right and left plate portions 40 of 33 are formed. Further, recessed portions 40a to be fitted to the right and left projecting pieces 24a of the fitting lever 24 are formed on the end faces of the pair of left and right plate portions 40 on the plug insertion side.

Further, as shown in Fig. 9, the left and right inner leg portions 26 of the plug 20 are formed as straight portions 38a whose outer side faces contact the left and right guide faces 38 of the slot 30. In this way, when the plug is inserted, the left and right inner leg portions 26 respectively contact the left and right guide faces 38 and are guided, so that the insertability of the plug 20 can be improved. In addition, when the buckle is engaged, the left and right inner leg portions 26 respectively contact the left and right guide faces 38, so The sway of the plug 20 and the slot 30 in the width direction can be prevented.

Further, as shown in FIG. 9, the maximum width dimension L1 of the operation portion 25a of the left and right leg portions 22 of the plug 20 is set to be larger than the maximum width dimension L2 of the plug-side base portion 21 of the plug 20 and the slot 30. The maximum width dimension L3 of the slot side base portion 31 is also large. In this way, the left and right operation portions 25a are disposed outside the plug-side base portion 21 and the slot-side base portion 31 in the width direction. Therefore, even if the user is manually explored, the left and right operation portions 25a can be easily found. Even if the gloved hand or finger is worn, the left and right operation portions 25a can be easily pushed inward, and the operability of the buckle 10 can be improved.

As described above, according to the buckle 10 of the present embodiment, the length T1 of the pair of engaging projections 23 of the leg portion 22 of the plug 20 is set to be smaller than the slit 37 of the slot 30. The width direction dimension T2 is also large, so that even if the plug 20 is obliquely inserted into the plug insertion line PL, the pair of engaging projections 23 of one of the leg portions 22 of the plug 20 may contact the upper side wall portion 34 of the slot 30. And the guide surface 38 of the left lower side wall portion 35 is guided. Based on this, the orientation of the plug 20 is adjusted to be along the plug insertion line PL, so that the plug 20 can be easily inserted into the slot 30.

Further, according to the buckle 10 of the present embodiment, the dimension T3 of the first curved portion 26a of the inner leg portion 26 of the plug 20 is set to be smaller than the width T2 of the slit 37 of the slot 30. Further, even if the plug 20 is obliquely inserted into the plug insertion line PL, the outer side surface of the first bent portion 26a of one of the inner leg portions 26 of the plug 20 contacts the upper side wall portion 34 and the lower side wall of the slot 30. The end of the portion 35 is subjected to guide. Based on this, the orientation of the plug 20 is again adjusted to be along the plug insertion line PL, so that the plug 20 can be inserted into the slot 30 more easily.

Further, according to the buckle 10 of the present embodiment, the upper and lower dimensions T4 of the operation portion 25a of the outer leg portion 25 of the plug 20 are set to be larger than the upper and lower dimensions T5 between the upper and lower plates 32 and 33. Therefore, even if the plug 20 is obliquely inserted into the plug insertion line PL, the inner side surface of the operation portion 25a of one of the outer leg portions 25 of the plug 20 contacts the outer side surfaces of the upper plate 32 and the lower plate 33 of the slot 30 and is subjected to guide. Based on this, the orientation of the plug 20 is again adjusted to be along the plug insertion line PL, so that the plug 20 can be inserted into the slot 30 more easily.

Further, according to the buckle 10 of the present embodiment, since the plug 20 has the fitting rod 24 disposed between the pair of leg portions 22 and formed in parallel with the pair of leg portions 22, the slot 30 is disposed on the upper and lower plates 32. The 33 holes are the fitting holes 39 to be fitted to the fitting rods 24. Therefore, when the buckles are engaged, the plugs 20 and the slots 30 can be prevented from rattling in the vertical direction and the width direction.

Further, according to the buckle 10 of the present embodiment, since the inner side surfaces of the upper and lower plates 32, 33 of the slot 30 are formed to be gradually narrowed toward the slot side base portion 31, the plugs of the upper and lower plates 32, 33 are inserted at the side of the plug. The portion can be formed to be wider, and based on this, the insertability of the plug 20 can be improved.

Further, according to the buckle 10 of the present embodiment, since the inner leg portions 26 on the right and left sides of the plug 20 are formed as the straight portions 38a whose outer side faces contact the left and right guide faces 38 of the slot 30, the plugs are inserted into the plugs. When inserted, the left and right inner leg portions 26 respectively contact the left and right guide faces 38 and Guided, based on this, the insertion of the plug 20 can be improved. Further, when the buckle is engaged, since the left and right inner leg portions 26 respectively contact the left and right guide faces 38, the sway of the plug 20 and the slot 30 in the width direction can be prevented.

Further, according to the buckle 10 of the present embodiment, the maximum width dimension L1 of the operation portion 25a of the left and right leg portions 22 of the plug 20 is set to be larger than the maximum width dimension L2 of the plug side base portion 21 of the plug 20. Since the maximum width dimension L3 of the slot side base portion 31 of the slot 30 is also large, the left and right operation portions 25a are disposed outward in the width direction from the plug side base portion 21 and the slot side base portion 31. In this way, the left and right operation portions 25a can be easily found even by the hand, and the left and right operation portions 25a can be easily pushed inward even by the gloved hands and fingers, and the operability of the buckle 10 can be improved.

Further, according to the buckle 10 of the present embodiment, the end portion of the slit 37 of the slot 30 on the insertion side of the plug is opened, and the operation portion 25a of the outer leg portion 25 of the plug 20 is disposed on the upper and lower plates. The side edges of the width direction of the 32, 33 are also located outside the width direction, so there are two ways to release the engagement of the buckle 10, that is, one way for the user to hold the slot 30 with one hand and another The left and right operation portions 25a are pressed by one hand, and the plug 20 is detached from the slot 30. Alternatively, the user presses the left and right operation portions 25a with one hand while the left and right operation portions 25a are pressed. When ejected, the plug 20 is removed from the slot 30.

Further, according to the buckle 10 of the present embodiment, the operation portion 25a of the leg portion 25 on the outer side of the plug 20 is disposed on the upper and lower plates. The side edges in the width direction of 32, 33 are also located outside in the width direction, so that the size of the buckle 10 can maintain operability even if it is formed to be small. Further, specifically, for example, even if the buckle is attached to a belt having a width of 8 mm, the user can easily operate.

Further, according to the buckle 10 of the present embodiment, since the end portion of the slit 37 of the slot 30 on the plug insertion side is open, the end portion of the slot 30 on the insertion side of the plug is not formed in a ring shape. . In this way, the entire length of the slot 30 can be made shorter without forming the annular portion, and the overall length of the buckle 10 can be made shorter. Further, in the present embodiment, the insertion angle of the plug 20 to the plug insertion line PL can be made wider than in the case of being formed in a ring shape.

The present invention is not limited to the embodiments described above, and may be appropriately modified without departing from the spirit and scope of the invention.

10‧‧‧ buckle

20‧‧‧ plug

21‧‧‧ Plug base

21a‧‧‧ side panel

21b‧‧‧1st link

21c‧‧‧2nd link

21d‧‧‧3rd link

21e‧‧‧ convex

21f‧‧‧Protruding

22‧‧‧foot

23‧‧‧Clamping protrusion

24‧‧‧Fiing rod

24a‧‧‧1

25‧‧‧ outside foot

25a‧‧‧Operation Department

25b‧‧‧Slit insertion

26‧‧‧Inside foot

26a‧‧‧1st bend

26b‧‧‧2nd bend

30‧‧‧Slots

31‧‧‧Slot side base

31a‧‧‧ side panel

31b‧‧‧ Connecting rod

32‧‧‧Upper board

32a‧‧‧ recess

32b‧‧‧1

33‧‧‧ Lower board

34‧‧‧Upper side wall

34a‧‧‧ inclined section

35‧‧‧lower side wall

35a‧‧‧ inclined section

36‧‧‧Clock section

37‧‧‧ slitting

38‧‧‧ Guide surface

39‧‧‧ fitting holes

40‧‧‧ Board Department

Claims (11)

A buckle having a plug (20) and a slot (30) for inserting the plug (20) into engagement with the plug (20), the plug (20) having a plug-side base portion (21) to which a belt-shaped member is attached; a pair of leg portions (22) extending from both end portions in the width direction of the plug-side base portion (21) to each other; and respectively protruding in the up-and-down direction a pair of engagement projections (23) formed at a front end portion of the pair of leg portions (22), and an operation portion (25a) for operating the leg portion (22) on the leg portion (22); a slit insertion portion (25b) between the engagement projection (23) of the leg portion (22) and the operation portion (25a), wherein the slot (30) has a slot in which a belt-shaped member is attached a side base portion (31); an upper plate (32) and a lower plate (33) extending from the slot-side base portion (31); and two side edges along the width direction of the upper plate (32) are formed to protrude downward An upper side wall portion (34); a lower side wall portion (35) protruding upward along both side edges in the width direction of the lower plate (33); and the pair of the pair of upper and lower plates (32, 33) interposed therebetween The pair of engaging protrusions (23) of the leg portion (22) can be respectively carded Fitted section (36); formed between the upper side wall portion (34) and the lower side wall portion (35), the end opening of the plug insertion side is formed as a slit (37) into which the pair of leg portions (22) can be inserted And the inner side surface of the upper side wall portion (34) and the lower side wall portion (35), and the pair of cards of the pair of leg portions (22) inserted between the upper and lower plates (32, 33) The joint portion (23) is guided to the guide surface (38) of the engagement portion (36), and the vertical dimension (T1) of the pair of engagement projections (23) is set to be larger than the slit (37) The width dimension (T2) is also large, and when the plug (20) is inserted into the slot (30), the slot insertion portion (25b) of the leg portion (22) of the plug (20) enters the above The slit (37) of the slot (30) guides the engaging projection (23) of the leg portion (22) by the guiding surface (38) of the slot (30). The buckle according to the first aspect of the invention, wherein the leg portion (22) has an outer leg portion (25) and an inner leg portion (26), and the upper and lower dimensions of the inner leg portion (26) (T3) ) is set to be larger than the width dimension (T2) of the slit (37). The buckle according to the second aspect of the invention, wherein an operation portion (25a) is formed from a base end portion to an intermediate portion of the outer leg portion (25), and a vertical dimension of the operation portion (25a) is T4) is set to It is larger than the vertical dimension (T5) between the upper and lower plates (32, 33). The buckle according to any one of claims 1 to 3, wherein the plug (20) is disposed between the pair of leg portions (22) and formed with the pair of leg portions ( 22) A parallel fitting rod (24) having a fitting hole (39) disposed between the upper and lower plates (32, 33) and fitted to the fitting rod (24). The buckle according to claim 3, wherein the outer leg portion (25) is formed with a slit insertion portion (25b) into which the slit (37) of the slot (30) can be inserted. The buckle according to the first aspect of the invention, wherein the inner side surface of the upper and lower plates (32, 33) of the slot (30) is formed to be gradually narrowed toward the slot side base portion (31). The buckle according to the fourth aspect of the invention, wherein the inner side surface of the upper and lower plates (32, 33) of the slot (30) is formed to be gradually narrowed toward the slot side base portion (31). A buckle comprising: a plug (20) and a slot (30) for engaging with the plug (20), the plug (20) having: a plug with a belt-shaped member a plug-side base portion (21); a pair of leg portions (22) extending from both end portions in the width direction of the plug-side base portion (21) to be parallel to each other; and a pair of leg portions (22) protruding in the vertical direction )front end a pair of engaging projections (23), wherein the slot (30) has a slot-side base portion (31) to which a belt-shaped member is attached, and an upper plate extending from the slot-side base portion (31) (32) and a lower plate (33); an upper side wall portion (34) protruding downward along both side edges of the upper plate (32) in the width direction; and both side edges along the width direction of the lower plate (33) a lower side wall portion (35) protruding upward; and the pair of engaging projections (23) of the pair of leg portions (22) inserted between the upper and lower plates (32, 33) are respectively engageable The engaging portion (36) is formed between the upper side wall portion (34) and the lower side wall portion (35), and the end opening of the plug insertion side is formed to allow the pair of leg portions (22) to be inserted a slit (37); and an inner side surface of the upper side wall portion (34) and the lower side wall portion (35), and the pair of leg portions (22) inserted between the upper and lower plates (32, 33) The pair of engaging projections (23) are guided to the guiding surface (38) of the engaging section (36), and the plug (20) is inserted into the slot (30) to cause the plug ( 20) The above-mentioned engaging protrusion (23) of the above-mentioned leg portion (22) contacts the above slot The above-described guide surface (38) of (30) performs guidance. The buckle according to claim 8, wherein the leg portion (22) has an outer leg portion (25) and an inner leg portion. (26) The outer side surface of the inner leg portion (26) is guided to the upper side wall portion (34) and the lower side wall portion (35) of the slot (30). The buckle according to claim 8 or 9, wherein the leg portion (22) has an outer leg portion (25) and an inner leg portion (26), and an inner side surface of the outer leg portion (25) The outer surface of the upper plate (32) and the lower plate (33) of the above slot (30) are guided to perform guiding. The buckle according to the eighth aspect of the invention, wherein the insertion of the plug (20) into the slot (30) is continuously performed: the above-described leg portion (22) of the plug (20) The guiding protrusion (23) and the guiding surface (38) of the slot (30) are guided by the outer side surface of the inner leg portion (26) and the upper side wall portion of the slot (30). And the guiding of the lower side wall portion (35); and the inner side surface of the outer leg portion (25) of the plug (20) and the upper plate (32) and the lower plate of the slot (30) (33) The guidance caused by the outer side.